Other Parts Discussed in Thread: DRA829, TDA4VM, , DRA829V
Refer to power up sequence diagram of DRA829_TDA4VM_3Ph_Dual_Leo2.0_PDN-0C_v0.17.pdf,
1.This document shown VCCA_3V3(Pin 4) connected with VIO_IN(Pin 48) and power up at the same time.
2. I got the other kinds of description below from the document of Dual TPS6594-Q1 PMIC User Guide for Jacinto 7 DRA829
and TDA4VM Automotive PDN-0B.
The VCCA voltage must be the first voltage applied to the PMIC devices. VIO_IN of the PMICs must not
be supplied before VCCA. A load switch supplies VIO_IN in this PDN.
3. The third kinds of description below for User's Guide for Powering DRA829V and TDA4VM with the
TPS6594-Q1 PMICs:
The VCCA voltage must be the first voltage applied to the PMIC devices, so VIO_IN of the PMICs must be
supplied after VCCA.
In summary, I feel power up sequence of VCCA_3V3(Pin 4) and VIO_IN(Pin 48) is very important, I am confused,
which description is reasonable for TPS65941213+TPS6594111 ?
